Which type of section would separate the body into equal halves?

A) transverse
B) oblique
C) parasagittal
D) midsagittal

Which of the following does not contain a gastrovascular cavity?

A) Hydras
B) Cnidarians
C) Sponges
D) Flatworms
E) Jellyfish

Which of the following will increase enzyme activity?

A) increase the temperature to boiling
B) decrease the concentration of the enzyme
C) alter the substrate
D) change to optimum pH for the reaction
E) decrease the temperature

Genetic recombination occurs during meiosis when

A) genetic material is duplicated.
B) chromosomes are paired.
C) sister chromatids are segregated.
D) haploid gametes are formed.

You collect the following data on genotypes for a sunflower population: AA: 40, AB: 20, BB: 40. Based on Hardy-Weinberg predictions you expected the following numbers: AA: 25, AB: 50, BB: 25. Which of the following is a plausible explanation for the deviation?

A) balancing selection
B) negative frequency-dependent selection
C) inbreeding
D) genetic drift

A patient's blood analyses indicated an increase in the number of eosinophils. Which of the following is the most likely cause?

A) Viral infection
B) Parasitic worm infection
C) Bacterial infection
D) Tumor cells

Inside each leaf vein, ____ transports water and dissolved mineral ions to photosynthetic cells, while ____ transports products of photosynthesis (sugars) away from them.

A) xylem; phloem
B) phloem; xylem
C) parenchyma cells; sclerenchyma cells
D) sclerenchyma cells; parenchyma cells
E) sieve elements; vessel elements;